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Advanced Regulatory Control by David W. Spitzer

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Transmitter Technology

“Smart” transmitters that utilize microprocessor electronics are more stable and can usually provide more accurate data than their analog counterparts because of the inherent stability of digital circuitry and cost-effectiveness of implementing more sophisticated algorithms. One salient advantage of this technology is the ability to accurately measure the process variable over small ranges.

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FIG. 3-14(B). Capacitance level transmitter—conductive fluid

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FIG. 3-15. Displacer level transmitter (Courtesy Masoneilan Division of ...

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